CN104790533B - Fabricated construction preformed hole starches anchor lapping construction method under a kind of low temperature environment - Google Patents

Fabricated construction preformed hole starches anchor lapping construction method under a kind of low temperature environment Download PDF

Info

Publication number
CN104790533B
CN104790533B CN201510207856.0A CN201510207856A CN104790533B CN 104790533 B CN104790533 B CN 104790533B CN 201510207856 A CN201510207856 A CN 201510207856A CN 104790533 B CN104790533 B CN 104790533B
Authority
CN
China
Prior art keywords
construction
self limiting
temperature heat
heat tape
tie hoop
Prior art date
Application number
CN201510207856.0A
Other languages
Chinese (zh)
Other versions
CN104790533A (en
Inventor
刘琳
Original Assignee
沈阳建筑大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 沈阳建筑大学 filed Critical 沈阳建筑大学
Priority to CN201510207856.0A priority Critical patent/CN104790533B/en
Publication of CN104790533A publication Critical patent/CN104790533A/en
Application granted granted Critical
Publication of CN104790533B publication Critical patent/CN104790533B/en

Links

Abstract

Fabricated construction preformed hole starches anchor lapping construction method under a kind of low temperature environment, and step is:1st, complete to wind self limiting temperature heat tape on the connection reinforcing bar after Jiang Mao lap-joints connect reinforcing bar, reinforcing cage stirrup and tie hoop installation and welded in tie hoop by design, then assembly concrete component is poured, self limiting temperature heat tape is embedded in concrete;2nd, in surface of concrete structure covering insulation material after component in-site installation;3rd, self limiting temperature heat tape electrified regulation is poured into grouting material in backward tie hoop in 10 minutes, grouting material and concrete component is kept 45 ± 5 DEG C of maintenance 30min~72h hardening using the electric heating of self limiting temperature heat tape.The construction method is directly heated using self limiting temperature heat tape to grouting material, it can be ensured that grouting material does not freeze, homogeneous heating, and the thermal efficiency is high, reduces influence of the environment temperature to construction quality;Construction method is simple, safety, is not limited by building height and structure size.

Description

Fabricated construction preformed hole starches anchor lapping construction method under a kind of low temperature environment

Technical field

The present invention relates to building structural member, fabricated construction preformed hole starches anchor lapping construction under particularly a kind of low temperature environment Method.

Background technology

The technology that preformed hole slurry anchor overlap joint is used when being a kind of safer reliable prefabricated assembled component connection.The party Method be lower floor's wall top surface it is reserved with vertical applied force bar gauge and the same number of joint bar in wall, correspondingly, upper The hole that inwall is corrugated or helical form rough surface is reserved in layer wall.Upper wall install it is in place after, by with hole Grout hole and steam vent that hole is connected, grouting material is injected into hole, and grouting material is condensed after hardening, and upper and lower layer wall is connected Connect and be integrally formed.This connected mode it is crucial that to prevent anchorage zone from occurring along reinforcing bar side while anchorage length is ensured To the adverse effect produced by crack.According to《Prefabricated concrete structure technical regulation》(JGJ1-2014), during grouting, day puts down Uniform temperature is not lower than 5 DEG C.As environment temperature is less than the lowest construction temperature of cement-based grouting material requirement or needs to accelerate During gain in strength, mostly conserved at present using Heat artificially mode, such as steam curing method, brooder method, electric blanket method, iodine-tungsten lamp method Etc..

The northern area of China winter temperature is down to less than 0 DEG C (i.e. subzero temperature), using this construction method, works as assembled architecture When structure level number is higher, component is larger, manually heating curing is very inconvenient, and is affected by human factors, and heating-up temperature is difficult Control it stable, once temperature decrease, grouting material easily freezes in hardening process, influence strength development, construction quality It also is difficult to ensure.

The content of the invention

It is an object of the invention to provide one kind do not limited by depth of building and component size, easy construction, can maximum limit Fabricated construction preformed hole slurry anchor lapping construction method under the low temperature environment that degree reduction environment temperature influences on construction quality.

To achieve the above object, fabricated construction preformed hole slurry anchor lapping construction side under the low temperature environment that the present invention is provided Method, comprises the following steps:

Step 1, prefabricated components

The connection reinforcing bar, reinforcing cage stirrup and tie hoop for completing preformed hole Jiang Mao lap-joints by design are installed and welded Afterwards;Self limiting temperature heat tape is wound on the connection reinforcing bar in tie hoop, and is fixed with fixing band, self limiting temperature electrical heating Winding scope of band etc. is higher than tie hoop;Then assembly concrete component is poured, notes making self limiting temperature electrical heating when pouring Band is embedded in concrete, does not allow to expose from concrete;

Step 2, the prefabricated components completion in-site installation by step 1, are then covered on the surface of assembly concrete component Insulation material;

Step 3, self limiting temperature heat tape is connected with power supply, is then electrified to heating and poured in backward tie hoop for 10 minutes Grouting material, the temperature for making grouting material and assembly concrete component using the electric heating of self limiting temperature heat tape is kept for 45 ± 5 DEG C, is filled Slurry conserves 30min~72h hardening at this temperature, completes fabricated construction preformed hole slurry anchor lapping construction under low temperature environment.

Compared with prior art, it is an advantage of the invention that:

1st, grouting connecting portion is directly heated using self limiting temperature heat tape, it is ensured that grouting material is closed at 45 ± 5 DEG C Under the conditions of conserved, grouting material will not freeze, and curing temperature is stable, and the work caused by environment temperature is low is reduced to greatest extent Journey quality problems.

2nd, self limiting temperature heat tape is evenly arranged in tie hoop grouting junction, and directly grouting connecting portion is added Heat, homogeneous heating, the thermal efficiency is high.

3rd, construction method is simple, safety, is not limited, can made in any job site by building height and structure size With.

Brief description of the drawings

Fig. 1 is the longitudinal section view of fabricated construction preformed hole Jiang Mao lap-joints node prepared using construction method of the present invention Figure;

Fig. 2 for along along Fig. 1-transverse sectional view at tie hoop position.

In figure:1- connection reinforcing bars, 2- reinforcing cage stirrups, 3- self limiting temperature heat tapes, 4- tie hoops, 5- assembled coagulations Native component, 6- insulation materials, 7- power supplys.

Embodiment

The invention will be further described with reference to the accompanying drawings and examples:

The present embodiment is that three groups are amounted to 9 beams in Shenyang Building Univ.'s structure laboratory (laboratory's temperature is -14 DEG C) The preformed hole slurry anchor overlap joint grouting experiment that post component node is carried out, experimental procedure is as follows:

Step 1, assembling and welding by connection reinforcing bar 1, steel reinforcement cage 2 and tie hoop 4 at design requirement completion node, so DBR-J type self limiting temperatures heat tape 3, self limiting temperature electricity are wound on the connection reinforcing bar 1 in tie hoop afterwards uniform consolidation Winding scope of heating tape etc. is higher than tie hoop (self limiting temperature heat tape can not influence grouting material to be poured into a mould into tie hoop); Then assembly concrete component 5 is poured, notes making self limiting temperature heat tape be embedded in concrete when pouring, is not allowed from mixed Expose in solidifying soil;

Step 2, the position covering corresponding with tie hoop on the surface of assembly concrete component are made up of cotton-wadded quilt Insulation material 6;

Step 3, the front end of self limiting temperature heat tape is connected with 220V AC powers 7, after being then electrified to heating 10 minutes CGMJM-VIII type grouting materials are poured into a mould into tie hoop with grouter, the electric heating using self limiting temperature heat tape makes tie hoop The temperature of interior grouting material and concrete component is maintained at 50 DEG C, conserves 24h, completes fabricated construction preformed hole under low temperature environment and starches Anchor lapping construction.

The grouting material and coagulation of the 9 beam column component nodes completed using nonmetallic ultrasound measuring instrument and forcing press to experiment Native component is detected that its compactness reaches construction technical requirement.

Claims (1)

1. fabricated construction preformed hole starches anchor lapping construction method under a kind of low temperature environment, the fabricated construction preformed hole starches anchor Overlap as beam column component node preformed hole slurry anchor overlap joint, it is characterised in that comprise the following steps:
Step 1, by design requirement complete node at connect reinforcing bar(1), steel reinforcement cage(2)And tie hoop(4)Assembling and welding, Then in the connection reinforcing bar in tie hoop(1)Wind DBR-J type self limiting temperature heat tapes upper uniform consolidation(3), from Winding scope of the warm heat tape of limit etc. is higher than tie hoop;Then assembly concrete component is poured(5), note making when pouring Self limiting temperature heat tape is embedded in concrete, does not allow to expose from concrete;
The insulation that step 2, the position covering corresponding with tie hoop on the surface of assembly concrete component are made up of cotton-wadded quilt Material( 6);
Step 3, by the front end of self limiting temperature heat tape and 220V AC powers(7)Connection, is used after being then electrified to heating 10 minutes Grouter pours into a mould CGMJM- into tie hoopType grouting material, the electric heating using self limiting temperature heat tape makes tie hoop The temperature of interior grouting material and concrete component is maintained at 50 DEG C, conserves 24h, completes fabricated construction preformed hole under low temperature environment and starches Anchor lapping construction.
CN201510207856.0A 2015-04-27 2015-04-27 Fabricated construction preformed hole starches anchor lapping construction method under a kind of low temperature environment CN104790533B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510207856.0A CN104790533B (en) 2015-04-27 2015-04-27 Fabricated construction preformed hole starches anchor lapping construction method under a kind of low temperature environment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510207856.0A CN104790533B (en) 2015-04-27 2015-04-27 Fabricated construction preformed hole starches anchor lapping construction method under a kind of low temperature environment

Publications (2)

Publication Number Publication Date
CN104790533A CN104790533A (en) 2015-07-22
CN104790533B true CN104790533B (en) 2017-10-13

Family

ID=53555680

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510207856.0A CN104790533B (en) 2015-04-27 2015-04-27 Fabricated construction preformed hole starches anchor lapping construction method under a kind of low temperature environment

Country Status (1)

Country Link
CN (1) CN104790533B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110685390A (en) * 2019-10-24 2020-01-14 天一建设发展有限公司 Construction method of building wall

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2852166B2 (en) * 1992-12-17 1999-01-27 株式会社フジタ Method for preventing freezing of grout material during PC member installation bonding
DE10002367C1 (en) * 2000-01-20 2001-07-19 Hilti Ag Long pot life mortar acting by rapid frontal polymerisation is used e.g. for fixing metal rods in concrete and comprises polymerizable monomers and/or hardenable resins with heat-activated initiators or accelerators
JP4559203B2 (en) * 2004-12-02 2010-10-06 オリエンタル白石株式会社 Electrothermal curing structure of prestressed concrete members.
CN102092089B (en) * 2010-12-15 2012-04-04 中国建筑第二工程局有限公司 Heating wire heating device and construction method for winter concrete
CN102296821A (en) * 2011-07-12 2011-12-28 中国十七冶集团有限公司 Construction method for heating curing of reinforced concrete resistance wire under low-temperature condition
CN102642244B (en) * 2012-04-10 2015-07-08 中南大学 Reinforced concrete structure curing device in low-temperature environment
CN102900168B (en) * 2012-10-08 2014-08-20 沈阳建筑大学 Splitting and assembling structure and assembling connecting method of assembled type concrete frame-shear wall
CN102935658A (en) * 2012-11-08 2013-02-20 沈阳建筑大学 Method and device for concrete electrical heating maintenance
JP5493032B1 (en) * 2013-05-01 2014-05-14 黒沢建設株式会社 Grout cold curing method
CN104153461A (en) * 2013-05-16 2014-11-19 叶新 Precast concrete structural member and method for building construction longitudinal connection between structural members

Also Published As

Publication number Publication date
CN104790533A (en) 2015-07-22

Similar Documents

Publication Publication Date Title
US9163613B2 (en) Support structure for a wind turbine and procedure to erect the support structure
CN106869172B (en) In-situ deposited prefabricated split-mounting type subway underground station construction method
CN101818539B (en) Assembled integral building and construction method thereof
US20160053492A1 (en) Method for building prestressed concrete structures by means of profiles consisting of a shape-memory alloy, and structure produced using said method
CN106121094B (en) The precast concrete shell structure of concrete shear force wall based on 3D printing
CN105735112B (en) Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier
JP4597199B2 (en) Foundation frame for installation of equipment and installation method of the foundation frame
CN103397705A (en) Connection structure of building composite floor slab and steel bar truss shear wall
CN106284846B (en) A kind of assembled steel reinforced concrete-constituted pile and system, construction method using the column
WO2018233440A1 (en) Node connection structure for prestressed prefabricated concrete frame and construction method thereof
CN101603335B (en) Once formed precast concrete shear wall with heat preserving veneer and production method thereof
CN107297810A (en) A kind of making of precast wall body component and installation method
CN106013811B (en) A kind of installation method of assembled architecture
CN102383418A (en) Anti-seismic prefabricated concrete solid square pile and production method thereof
CN106284655B (en) Precast concrete beam stud connects connecting node and connection method
CN106677339A (en) Assembly integral type concrete frame structure of dry-wet mixed connection of nodes and construction method
CN104947831A (en) Prefabricated assembly type profile steel concrete shear wall and construction method thereof
CN107143034A (en) A kind of assembly concrete frame structure beam column rigid connection node
CN104790522B (en) Prefabricated assembled profile steel concrete column steel girder frame structural system and construction method
CN206144031U (en) Assembled reinforced concrete constructional column and utilize system of this post
CN101736701A (en) Bridge steel and concrete mixing section constructing method
CN206438599U (en) A kind of low multilayer assembled heat insulation energy saving building
CN208430661U (en) A kind of vertical piece construction of line-styled self-heat conserving overlapped shear wall
CN101413251A (en) 0 type block anti-cracking construction method of high pier large across creeping formwork
CN101245621A (en) Cast-in-situ hollow building roof construction method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant